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HOMESERVICE MANUALSCHEVROLET2005OPTRA5 BASE, STANDARDREPAIR AND DIAGNOSISBRAKESMECHANICAL - HYDRAULICHYDRAULIC BRAKESSPECIFICATIONSBRAKE SYSTEM SPECIFICATIONS
2005 Chevrolet Optra5 Base, Standard

Brake System Specifications

2005 Chevrolet Optra5 Base, StandardSECTION Brake System Specifications
Application Specification
Metric English
Rear Brake Drums
  • Inside Diameter - New
 200 mm 7.87 in
  • Maximum Rebore Diameter
 201 mm 7.91 in
  • Radial Runout - Not Installed
 0.04 mm 0.0016 in
 
Booster Size
  • Single
 241.3 mm 9.5 in
  • Dual
 177.8 and 203.2 mm 7 and 8 in
Booster Ratio 5.5:1
Caliper
  • Minimum Piston Diameter - Front
 54 mm 2.126 in
  • Minimum Piston Diameter - Rear
 32 mm 1.260 in
Fluid Capacity 0.5 L
Front Brake Rotors
  • Disc Type
 Ventilated
  • Discard Thickness
 22 mm 0.87 in
  • Lateral Runout - Installed
 0.06 mm 0.002 in
  • Lateral Runout - Not Installed
 0.03 mm 0.001 in
  • Rotor Diameter
 256 mm 10.07 in
  • Rotor Thickness - New
 24 mm 0.95 in
  • Thickness Variation
 0.01 mm 0.0004 in
Master Cylinder
  • Bore Diameter - Nominal
 22.22 mm 0.875 in
  • Bore Diameter - Maximum
 22.29 mm 0.878 in
Rear Brake Rotors
  • Disc Type
 Solid
  • Discard Thickness
 8 mm 0.31 in
  • Lateral Runout - Installed
 0.08 mm 0.003 in
  • Lateral Runout - Not Installed
 0.05 mm 0.002 in
  • Rotor Diameter
 258 mm 10.15 in
  • Rotor Thickness - New
 10.4 mm 0.40 in
  • Thickness Variation
 0.01 mm 0.0004 in
Wheel Cylinder Diameter
  • Maximum
 20.7 mm 0.815 in
  • Nominal
 20.64 mm 0.812 in
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.